US PATENT SUBCLASS 431 / 141
.~ One way drive means between cover and abrasive wheel

Current as of: June, 1999
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431 /   HD   COMBUSTION

129  DF  BURNER HEAD COVER OPERATIVELY INTERRELATED WITH IGNITER {8}
141.~ One way drive means between cover and abrasive wheel

DEFINITION

Classification: 431/141

(under subclass 129) Apparatus wherein the igniter includes an abrasive wheel which is rotated in one direction only by a drive between it and the cover or cap.